Drop-in

real::regex replaces the regex engine you already use — same API, a linear-time, ReDoS-safe engine underneath.

C++ engine replacements

• std::regex — the <regex> surface with per-pattern fallback; the compatibility reference holds the exhaustive contract.

• RE2 — real::compat::re2, the RE2-shaped surface on the same linear engine, header-only and zero-dep.

Language bindings — each a drop-in for its host’s regex API:

• Python re — import real as re, strict by default.

• Rust regex crate — use real_regex::Regex, same surface.

• Go regexp — real.MustCompile, v0.1 subset.